Police in South Yorkshire wrote off 120 speeding offences involving people from overseas last year because officers were unable to trace the culprits.
New figures released by South Yorkshire Police reveal that 198 speeding vehicles registered to overseas drivers were recorded by the force in 2013.
But 120 offences were written off because of problems tracing the motorists involved.
The force also revealed that the top speed recorded by an overseas motorist last year was 82mph in a 70mph zone on the northbound stretch of the M1 between junctions 32 and 33 at Thurcroft and Catcliffe.
Neil Greig, director of policy and research at the Institute of Advanced Motorists, which asked all police forces in the country for their figures, said: “The high numbers of overseas speeders on our roads show how important it is that the UK joins up with the rest of Europe to harmonise motoring offences and give the police extra powers to pursue dangerous drivers.
“Progress on this issue has been very slow and, in the meantime, thousands of drivers are avoiding fines and bans simply because their cars cannot be easily traced.”
In Derbyshire there were 77 motorists from overseas who avoided prosecution last year.
The highest speed recorded by a foreign driver was 74mph in a 50mph zone on the northbound stretch of the M1 near Barlborough.
Nationally 23,295 overseas drivers escaped prosecution for speeding - offences which could have generated £2.3 million in speeding tickets.
They were all caught by speed cameras and involved vehicles registered abroad, which are not logged on the DVLA database in the UK.